# TVS DIODE, 1.5KW, 300V, DO-201, FULL REE
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**URL**: https://novapart.co/products/1.5KE300A/tvs-diode-transil-15ke-unidirectional-256-v-414-do
**SKU**: 1.5KE300A
**Manufacturer**: LITTELFUSE
**Category**: Circuit Protection || TVS - Transient Voltage Suppressors || TVS Diodes
**Price**: €0.2740
**Stock**: 10+
## Description
The Littelfuse 1.5KE300A is a unidirectional Transient Voltage Suppression (TVS) diode engineered to provide robust circuit protection against high-energy voltage transients, including those induced by lightning and electrostatic discharge (ESD). Housed in a standard DO-201 axial-leaded package, this component features a glass-passivated chip junction capable of dissipating a peak pulse power of 1.5kW (10/1000µs waveform). With a reverse standoff voltage of 256V and a maximum clamping voltage of 414V, it is specifically optimized for safeguarding sensitive I/O interfaces, VCC buses, and industrial control circuitry.
This device is designed for through-hole mounting and supports high-temperature operation up to 175°C, ensuring reliability in demanding thermal environments. The 1.5KE300A offers a fast response time of less than 1.0ps from 0V to its minimum breakdown voltage (285V). Compliant with RoHS and halogen-free standards, the diode utilizes a matte tin-plated lead finish suitable for standard soldering processes. Its electrical characteristics, including low reverse leakage current and excellent clamping capability, make it an effective solution for protecting electronic equipment in telecom, computer, and industrial automation applications against transient overvoltage events.
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (17-Dec-2014) |
| No. Of Pins | 2Pins |
| Tvs Polarity | Unidirectional |
| Product Range | 1.5KE Series |
| Qualification | - |
| Diode Mounting | Through Hole |
| Diode Case Style | DO-201 |
| Clamping Voltage Max | 414V |
| Reverse Standoff Voltage | 256V |
| Maximum Breakdown Voltage | 315V |
| Minimum Breakdown Voltage | 285V |
| Operating Temperature Max | 175°C |
| Peak Pulse Power Dissipation | 1.5kW |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:2368510/)
**Transient Voltage Suppression Diodes** Axial Leaded – 1500W > 1.5KE series
1.5KE Series ~~RoHS Pb~~ **~~e3~~ Description** Uni-directional The 1.5KE Series is designed specifically to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. **Features** Bi-directional • 1500W peak pulse • Low incremental surge capability at 10/1000μs resistance waveform, repetition rate • Typical IR less than 1μA (duty cycles):0.01% when VBR min>12V **Agency Approvals** • Glass passivated chip • High temperature AGENCY AGENCY FILE NUMBER junction in DO-201 Package to reflow soldering guaranteed: 260°C/40sec E230531 • Fast response time: / 0.375”,(9.5mm) lead typically less than 1.0ps length, 5 lbs., (2.3kg) from 0 Volts to BV min tension **Maximum Ratings and Thermal Characteristics (TA=25****O** **C unless otherwise noted)** • Excellent clamping • VBR @ TJ= VBR@25°C capability x (1+αT x (TJ - 25)) Parameter Symbol Value Unit • Typical failure mode is (αT:Temperature Peak Pulse Power Dissipation by short from over-specified Coefficient, typical value 10/1000μs Test Waveform (Fig.2) PPPM 1500 W voltage or current is 0.1%) (Note 1), (Note 4) • Whisker test is conducted • Plastic package is Steady State Power Dissipation on Infinite Heat Sink at TL=75ºC PD 6.5 W based on JEDEC JESD201A per its table 4a flammability rated V-0 per Underwriters Laboratories Peak Forward Surge Current, 8.3ms Single Half Sine Wave Unidirectional IFSM 200 A and 4c • Matte tin lead–free plated Only (Note 2) • IEC-61000-4-2 ESD • Halogen free and RoHS Maximum Instantaneous Forward 30kV(Air), 30kV (Contact) compliant Voltage at 100A for Unidirectional VF 3.5/5.0 V • ESD protection of data • Pb-free E3 means 2nd Only (Note 3) lines in accordance with level interconnect is Operating Junction and Storage TJ, TSTG -55 to 175 °C IEC 61000-4-2 Pb-free and the terminal Temperature Range • EFT protection of data finish material is tin(Sn) Typical Thermal Resistance Junction to Lead R θ JL 15 °C/W lines in accordance with (IPC/JEDEC J-STDIEC 61000-4-4 609A.01) Typical Thermal Resistance Junction to Ambient R θ JA 75 °C/W **Notes:** 1. Non-repetitive current pulse , per Fig. 4 and derated above TJ (initial) =25O C per Fig. 3. **Applications** 2. Measured on 8.3ms single half sine wave or equivalent square wave, duty cycle=4 per minute maximum. TVS devices are ideal for the protection of I/O interfaces, 3. VF < 3.5V for single die parts and VF< 5.0V for stacked-die parts.F < 3.5V for single die parts and VF< 5.0V for stacked-die parts. < 3.5V for single die parts and VF< 5.0V for stacked-die parts.F< 5.0V for stacked-die parts.< 5.0V for stacked-die parts. VCC bus and other vulnerable circuits used in telecom, CC bus and other vulnerable circuits used in telecom, bus and other vulnerable circuits used in telecom, 4. The PPPM of stacked-die parts is 2kW and please contact littelfuse for the detail PPM of stacked-die parts is 2kW and please contact littelfuse for the detail of stacked-die parts is 2kW and please contact littelfuse for the detail computer, industrial and consumer electronic applications. stacked-die parts. **Functional Diagram Additional Infomarion** Bi-directional **Datasheet Resources Samples** Cathode Anode Uni-directional
- Plastic package is flammability rated V-0 per Underwriters Laboratories Underwriters Laboratories
2. Measured on 8.3ms single half sine wave or equivalent square wave, duty cycle=4 per minute maximum.
3. VF < 3.5V for single die parts and VF< 5.0V for stacked-die parts.F < 3.5V for single die parts and VF< 5.0V for stacked-die parts. < 3.5V for single die parts and VF< 5.0V for stacked-die parts.F< 5.0V for stacked-die parts.< 5.0V for stacked-die parts.
4. The PPPM of stacked-die parts is 2kW and please contact littelfuse for the detail PPM of stacked-die parts is 2kW and please contact littelfuse for the detail of stacked-die parts is 2kW and please contact littelfuse for the detail stacked-die parts.
TVS devices are ideal for the protection of I/O interfaces, VCC bus and other vulnerable circuits used in telecom, CC bus and other vulnerable circuits used in telecom, bus and other vulnerable circuits used in telecom, computer, industrial and consumer electronic applications.
© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/20/15
**Transient Voltage Suppression Diodes** Axial Leaded – 1500W > 1.5KE series
**Electrical Characteristics (TA=25°C unless otherwise noted)** Maximum Reverse Maximum Maximum Agency Part Part Breakdown Voltage VBR Test Clamping Stand off Peak Pulse Reverse Approval Number Number (Volts) @ IT Current Voltage (Uni) (Bi) Voltage V(Volts) R MIN MAX IT (mA) V(Volts)C @ Ipp Current I(A) pp Leakage IVR (µA)R @ 1.5KE6.8A 1.5KE6.8CA 5.80 6.45 7.14 10 10.5 144.8 1000 X 1.5KE7.5A 1.5KE7.5CA 6.40 7.13 7.88 10 11.3 134.5 500 X 1.5KE8.2A 1.5KE8.2CA 7.02 7.79 8.61 10 12.1 125.6 200 X 1.5KE9.1A 1.5KE9.1CA 7.78 8.65 9.50 1 13.4 113.4 50 X 1.5KE10A 1.5KE10CA 8.55 9.50 10.50 1 14.5 104.8 10 X 1.5KE11A 1.5KE11CA 9.40 10.50 11.60 1 15.6 97.4 5 X 1.5KE12A 1.5KE12CA 10.20 11.40 12.60 1 16.7 91.0 5 X 1.5KE13A 1.5KE13CA 11.10 12.40 13.70 1 18.2 83.5 1 X 1.5KE15A 1.5KE15CA 12.80 14.30 15.80 1 21.2 71.7 1 X 1.5KE16A 1.5KE16CA 13.60 15.20 16.80 1 22.5 67.6 1 X 1.5KE18A 1.5KE18CA 15.30 17.10 18.90 1 25.2 60.3 1 X 1.5KE20A 1.5KE20CA 17.10 19.00 21.00 1 27.7 54.9 1 X 1.5KE22A 1.5KE22CA 18.80 20.90 23.10 1 30.6 49.7 1 X 1.5KE24A 1.5KE24CA 20.50 22.80 25.20 1 33.2 45.8 1 X 1.5KE27A 1.5KE27CA 23.10 25.70 28.40 1 37.5 40.5 1 X 1.5KE30A 1.5KE30CA 25.60 28.50 31.50 1 41.4 36.7 1 X 1.5KE33A 1.5KE33CA 28.20 31.40 34.70 1 45.7 33.3 1 X 1.5KE36A 1.5KE36CA 30.80 34.20 37.80 1 49.9 30.5 1 X 1.5KE39A 1.5KE39CA 33.30 37.10 41.00 1 53.9 28.2 1 X 1.5KE43A 1.5KE43CA 36.80 40.90 45.20 1 59.3 25.6 1 X 1.5KE47A 1.5KE47CA 40.20 44.70 49.40 1 64.8 23.5 1 X 1.5KE51A 1.5KE51CA 43.60 48.50 53.60 1 70.1 21.7 1 X 1.5KE56A 1.5KE56CA 47.80 53.20 58.80 1 77.0 19.7 1 X 1.5KE62A 1.5KE62CA 53.00 58.90 65.10 1 85.0 17.9 1 X 1.5KE68A 1.5KE68CA 58.10 64.60 71.40 1 92.0 16.5 1 X 1.5KE75A 1.5KE75CA 64.10 71.30 78.80 1 103.0 14.8 1 X 1.5KE82A 1.5KE82CA 70.10 77.90 86.10 1 113.0 13.5 1 X 1.5KE91A 1.5KE91CA 77.80 86.50 95.50 1 125.0 12.2 1 X 1.5KE100A 1.5KE100CA 85.50 95.00 105.00 1 137.0 11.1 1 X 1.5KE110A 1.5KE110CA 94.00 105.00 116.00 1 152.0 10.0 1 X 1.5KE120A 1.5KE120CA 102.00 114.00 126.00 1 165.0 9.2 1 X 1.5KE130A 1.5KE130CA 111.00 124.00 137.00 1 179.0 8.5 1 X 1.5KE150A 1.5KE150CA 128.00 143.00 158.00 1 207.0 7.3 1 X 1.5KE160A 1.5KE160CA 136.00 152.00 168.00 1 219.0 6.9 1 X 1.5KE170A 1.5KE170CA 145.00 162.00 179.00 1 234.0 6.5 1 X 1.5KE180A 1.5KE180CA 154.00 171.00 189.00 1 246.0 6.2 1 X 1.5KE200A 1.5KE200CA 171.00 190.00 210.00 1 274.0 5.5 1 X 1.5KE220A 1.5KE220CA 185.00 209.00 231.00 1 328.0 4.6 1 X 1.5KE250A 1.5KE250CA 214.00 237.00 263.00 1 344.0 4.4 1 X 1.5KE300A 1.5KE300CA 256.00 285.00 315.00 1 414.0 3.7 1 X 1.5KE320A 1.5KE320CA 273.00 304.00 336.00 1 441.0 3.5 1 X 1.5KE350A 1.5KE350CA 300.00 332.00 368.00 1 482.0 3.2 1 X 1.5KE400A 1.5KE400CA 342.00 380.00 420.00 1 548.0 2.8 1 X 1.5KE440A 1.5KE440CA 376.00 418.00 462.00 1 602.0 2.5 1 X 1.5KE480A 1.5KE480CA 408.00 456.00 504.00 1 658.0 2.3 1 1.5KE510A 1.5KE510CA 434.00 485.00 535.00 1 698.0 2.1 1 1.5KE530A 1.5KE530CA 451.00 503.50 556.50 1 725.0 2.1 1 1.5KE540A 1.5KE540CA 460.00 513.00 567.00 1 740.0 2.0 1 1.5KE550A 1.5KE550CA 468.00 522.50 577.50 1 760.0 2.0 1 1.5KE600A 1.5KE600CA 512.00 570.00 630.00 1 828.0 1.8 1 FFor bidirectional type having VR of 10 volts and less, the IR limit is double. For parts without A, the VBR is ± 10% and VC is 5% higher than with A parts.
© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/20/15
**Transient Voltage Suppression Diodes** Axial Leaded – 1500W > 1.5KE series
**I-V Curve Characteristics** Uni-directional Bi-directional Ipp IT Vc VBR VR IR Vc VBR VR V IR VRVBR Vc V IR VF IT IT Ipp Ipp **PPPM Peak Pulse Power Dissipation** -- Max power dissipation **VR Stand-off Voltage** -- Maximum voltage that can be applied to the TVS without operation **VBR Breakdown Voltage** -- Maximum voltage that flows though the TVS at a specified test current (IT) **VC C Clamping Voltage** -- Peak voltage measured across the TVS at a specified Ippm (peak impulse current) **IR Reverse Leakage Current** -- Current measured at VR **VF Forward Voltage Drop for Uni-directional Ratings and Characteristic Curves (TA=25°C unless otherwise noted) Figure 1 - TVS Transients Clamping Waveform Figure 2 - Peak Pulse Power Rating Voltage Transients** 100 ~~TJ initial = Tamb~~ stacked-die, 2kW **Voltage Across TVS** 10 ~~at 10x1000µs, 25°C~~ **Current Through TVS** ~~Single die, 1.5kW~~ 1 at 10x1000µs, 25°C 0.1 0.001 0.01 0.1 1 10 td-Pulse Width (ms) **Time continues on next page.**
- **VC C Clamping Voltage** -- Peak voltage measured across the TVS at a specified Ippm (peak impulse current)
© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/20/15
**Transient Voltage Suppression Diodes** Axial Leaded – 1500W > 1.5KE series
**Ratings and Characteristic Curves (TA=25°C unless otherwise noted) (Continued) Figure 3 - Peak Pulse Power Derating Curve Figure 4 - Pulse Waveform** 150 100 ~~t~~ r ~~=10µsec~~ TJ=25°C ~~Pulse Width(td) is def~~ i ~~ned~~ as the point where the peak Peak Value current decays to 50% of IPPM 75 100 I ~~PPM Half Value~~ 50 ~~IPPM~~ ~~( )IPPM~~ 2 25 50 10/1000µsec. Waveform ~~as def~~ i ~~ned by R.E.A~~ 0 ~~t~~ d 0 25 50 75 100 125 150 175 200 0 0 1.0 2.0 3.0 4.0 TJ - Initial Junction Temperature (ºC) t-Time (ms) **Figure 5 - Typical Junction Capacitance Figure 6 - Typical Transient Thermal Impedance** 100 100000 Uni-directional V=0V 10000 ~~Bi-directional V=0V~~ 10 1000 ~~Uni-directional V=~~ ~~V~~ ~~R~~ 100 1 10 Bi-directional V=V ~~R~~ 1 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 VBR - Reverse Breakdown Voltage(V) TP - Pulse Duration (s) **Figure 7 - Maximum Non-Repetitive Peak Forward Figure 8 - Peak Forward Voltage Drop vs Peak Forward Surge Current Uni-Directional Only Current (Typical Values)** 200 100.0 180 ~~Single die~~ 160 Stacked-die 140 10.0 120 100 80 60 1.0 40 20 0 1 10 100 0.1 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 Number of Cycles at 60 Hz VF-Peak Forward Voltage(V)
© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/20/15
**Transient Voltage Suppression Diodes** Axial Leaded – 1500W > 1.5KE series
**Soldering Parameters** Reflow Condition Lead–free assembly tp TP - Temperature Min (Ts(min)) 150°C Ramp-up Critical Zone TL to TP Pre Heat - Temperature Max (Ts(max)) 200°C TL ~~t~~ L - Time (min to max) (ts) 60 – 180 secs Ts(max ~~)~~ Average ramp up rate (Liquidus Temp (TA) Ramp-down 3°C/second max Ts(min) to peak ~~t~~ s Preheat TS(max) to TA - Ramp-up Rate 3°C/second max Reflow - Temperature (TA) (Liquidus) 217°C 25˚C ~~t 25 ˚~~ ~~C to Peak~~ - Time (min to max) (ts) 60 – 150 seconds Time (t) Peak Temperature (TP) 260+0/-5 °C Time within 5°C of actual peak 20 – 40 seconds **Flow/Wave Soldering (Solder Dipping)** Temperature (tp) Ramp-down Rate 6°C/second max **Peak Temperature :** 265O C Time 25°C to peak Temperature (TP) 8 minutes Max. **Dipping Time :** 10 seconds Do not exceed 260°C **Soldering :** 1 time **Physical Specifications Environmental Specifications Weight** 0.045oz., 1.2g **High Temp. Storage** JESD22-A103 JEDEC DO-201 molded plastic body **Case** over passivated junction. **HTRB** JESD22-A108 Color band denotes the cathode except **Polarity Temperature Cycling** JESD22-A104 Bipolar. Matte Tin axial leads, solderable per **H3TRB** JESD22-A101 **Terminal** JESD22-B102. **RSH** JESD22-B106 **Dimensions** Inches Millimeters **Cathode Band** Dimensions Min Max Min Max (for Uni-directional products only) **D** A 1.000 - 25.40 - **C** B 0.285 0.375 7.20 9.50 C 0.038 0.042 0.96 1.07 **A B A** D 0.190 0.210 4.80 5.30 **DO-201**
© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/20/15
## Links
- [View this product on Novapart](https://novapart.co/products/1.5KE300A/tvs-diode-transil-15ke-unidirectional-256-v-414-do)
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- [Supplier page](https://es.farnell.com/littelfuse/1-5ke300a/tvs-diode-1-5kw-300v-do-201-full/dp/2368510)
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